Using terahertz radiation to detect OH radicals and NO molecules in flames.

Authors :: Chesnokov, E. N.
Aseev, O. S.
Korobeinichev, O. P.
Yakimov, S. A.
Knyaz'kov, D. A.
Shmakov, A. G.
Source :: Combustion, Explosion, & Shock Waves; Mar2010, Vol. 46 Issue 2, p149-153, 5p, 1 Diagram, 2 Graphs
Publication Year :: 2010
Abstract: The possibility of detecting OH radicals and stable paramagnetic NO species in flames using the effect of rotation of the polarization plane of terahertz radiation (1–10 THz) in a magnetic field (Faraday effect) was experimentally demonstrated. Experimental data on detection of NO in a cell and OH radicals in an atmospheric-pressure H<subscript>2</subscript>/O<subscript>2</subscript>/N<subscript>2</subscript> flame using this method are given. The proposed method can be used to study highly scattering media which are opaque in the visible region, for example, dusty or sooty flames. [ABSTRACT FROM AUTHOR]